Offline detection equipment integrated with airtight monitoring function

Abstract

The utility model discloses an off-line detection device integrated with an airtight monitoring function, which comprises an air inlet control module, a three-cavity air inlet control module, an insulation monitoring module and a control module, the air inlet control module is connected with the three-cavity air inlet control module through a pipeline, the air inlet control module is electrically connected with the control module, and the insulation monitoring module is electrically connected with the control module. The insulation monitoring module can communicate with the control module, the insulation monitoring module is electrically connected with the control module, the three-cavity air inlet control module is connected to a tested engine system through a pipeline, and the insulation monitoring module is electrically connected to the tested engine system. The control module is electrically connected to the tested engine system, and the control module can communicate with the tested engine system. According to the utility model, the problems of low offline detection efficiency and tedious process of the existing fuel cell engine system can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of off-line detection of fuel cell engine systems, in particular to off-line detection equipment with an integrated airtight monitoring function. Background Art

[0002] At present, the fuel cell engine system needs to be tested for air tightness, sensor signal reading, valve jog, insulation resistance, etc. before it goes offline. Conventional offline testing has the following disadvantages:

[0003] 1. The valve inching and sensor signals need to be manually controlled and read by the test engineer, and the test harness, power supply, CAN communication line, etc. need to be connected each time, which is inefficient;

[0004] 2. Insulation detection needs to be manually detected with an insulation tester, and the upper computer needs to cooperate to attract the main circuit relay and alternately test the main positive to ground and the main negative to ground. The testing process is cumbersome;

[0005] 3. For airtightness detection, simple testing equipment cannot monitor the pressure of the three chambers of hydrogen, air, and water inside the engine system in real time, which may cause the engine to be damaged by excessive pressure difference. Professional airtightness monitoring equipment is too expensive.

[0006] In summary, the existing fuel cell engine system offline detection is inefficient and the process is cumbersome. Utility Model Content

[0007] To this end, an embodiment of the utility model provides an offline detection device with an integrated airtightness monitoring function to solve the problem that the existing offline detection of fuel cell engine systems is inefficient and has a complicated process.

[0008] In order to achieve the above purpose, the embodiment of the utility model provides the following technical solutions:

[0009] A offline detection device with integrated airtightness monitoring function comprises an intake control module, a three-chamber intake control module, an insulation monitoring module and a control module, wherein the intake control module and the three-chamber intake control module are connected via a pipeline, the intake control module and the control module are electrically connected, the insulation monitoring module and the control module can communicate with each other, and the insulation monitoring module and the control module are electrically connected, the three-chamber intake control module is connected to an engine system under test via a pipeline, the insulation monitoring module is electrically connected to the engine system under test, the control module is electrically connected to the engine system under test, and the control module and the engine system under test can also communicate.

[0010] Preferably, the air intake control module comprises a manual switch, a first pressure sensor, a shut-off valve, a proportional valve and a second pressure sensor which are sequentially connected to the pipeline.

[0011] Preferably, the three-chamber air intake control module includes an exhaust valve, a hydrogen circuit valve, an air circuit valve and a water circuit valve, the exhaust valve, the hydrogen circuit valve, the air circuit valve and the water circuit valve are connected in parallel through pipelines, and the exhaust valve, the hydrogen circuit valve, the air circuit valve and the water circuit valve are interconnected, the rear section of the hydrogen circuit valve is connected to a third pressure sensor, the rear section of the air circuit valve is connected to a fourth pressure sensor, the rear section of the water circuit valve is connected to a fifth pressure sensor, and an air circuit interface is provided at the end of the pipeline where the hydrogen circuit valve, the air circuit valve and the water circuit valve are located, and the air circuit interface is connected to the engine system under test through a pipeline.

[0012] Preferably, the insulation monitoring module includes an insulation monitoring mechanism and a high-voltage interface, the insulation monitoring mechanism and the high-voltage interface are electrically connected, the insulation monitoring mechanism is electrically connected to the control module, and the insulation monitoring mechanism communicates with the control module, and the high-voltage interface is electrically connected to the engine system under test.

[0013] Preferably, the control module includes a controller, a switching power supply, a UPS, a panel, a CAN tool, a host computer and a low-voltage interface. The controller is electrically connected to the switching power supply, the controller is electrically connected to the low-voltage interface, the low-voltage interface is electrically connected to the engine system under test, and the low-voltage interface communicates with the engine system under test through CAN. The controller is electrically connected to the intake control module, the controller is electrically connected to the panel, the switching power supply is electrically connected to the panel, the controller and the CAN tool can communicate with each other, the CAN tool and the host computer can communicate with each other, and the UPS is electrically connected to the switching power supply and the host computer respectively.

[0014] Further preferably, the insulation monitoring mechanism communicates with the control module via CAN communication.

[0015] Further preferably, the controller communicates with the CAN tool via CAN communication; the CAN tool communicates with the host computer via CAN communication.

[0016] Preferably, a grounding wire is connected to the insulation monitoring mechanism.

[0017] Further preferably, the panel is provided with an emergency stop button, an equipment status indicator light, a fault indicator light and a fault buzzer.

[0018] Further preferably, the host computer is provided with a self-test button, a start airtightness test button, an insulation test button and a device jog button.

[0019] The utility model has at least the following beneficial effects:

[0020] 1. The utility model relates to an offline detection device with integrated airtight monitoring function, an integrated insulation monitoring module, which avoids the tedious process of testing with an insulation meter, and an integrated air intake control module and a three-cavity air intake control module, which monitor the pressure of hydrogen, air and water in real time, and can effectively avoid the problem of large pressure difference during the test. The air intake control module, the three-cavity air intake control module, the insulation monitoring module and the control module of the entire equipment cooperate with each other, and the efficiency of offline detection of the fuel cell engine system is improved, and the operation is simple.

[0021] 2. The equipment of the utility model is powered by UPS. Even if the power is cut off during the test process, it can support the completion of the airtight monitoring process and the normal power-off process, which is safe and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly explain the prior art and the present invention, the following briefly introduces the drawings required for describing the prior art and the present invention. Obviously, the drawings described below are only exemplary, and for ordinary technicians in this field, other drawings can be derived from the provided drawings without creative work.

[0023] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so that people familiar with this technology can understand and read them. They are not used to limit the conditions under which the present invention can be implemented. Any structural modification, change in proportion or adjustment of size should still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0024] Figure 1 It is a schematic diagram of an offline detection device with integrated airtightness monitoring function according to the utility model;

[0025] Description of reference numerals:

[0026] 1. Intake control module; 101. Manual switch; 102. First pressure sensor; 103. Shut-off valve; 104. Proportional valve; 105. Second pressure sensor; 2. Three-chamber intake control module; 201. Exhaust valve; 202. Hydrogen path valve; 203. Air path valve; 204. Water path valve; 205. Third pressure sensor; 206. Fourth pressure sensor; 207. Fifth pressure sensor; 208. Gas path interface; 3. Insulation monitoring module; 301. Insulation monitoring mechanism; 302. High-voltage interface; 303. Grounding wire; 4. Control module; 401. Controller; 402. Switching power supply; 403. UPS; 404. Panel; 405. CAN tool; 406. Host computer; 407. Low-voltage interface. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0028] In the description of the present invention, unless otherwise specified, "plurality" means two or more. The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present invention and the above-mentioned drawings are intended to distinguish the objects referred to. For schemes with a sequential flow, this terminology does not have to be understood as describing a specific order or sequence. For schemes with device structures, this terminology does not distinguish between importance, positional relationships, etc.

[0029] In addition, the terms "comprises", "has" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus that includes a series of steps or units is not necessarily limited to those steps or units that have been explicitly listed, but may also include other steps or units that are not explicitly listed but are inherent to these processes, methods, products or apparatuses, or steps or units that are added based on further optimization schemes conceived by the present invention.

[0030] See also Figure 1The embodiment of the utility model provides an offline detection device with an integrated airtight monitoring function, including an intake control module 1, a three-chamber intake control module 2, an insulation monitoring module 3 and a control module 4. The intake control module 1 is connected to the three-chamber intake control module 2 through a pipeline, the intake control module 1 is electrically connected to the control module 4, the insulation monitoring module 3 and the control module 4 can communicate with each other, and the insulation monitoring module 3 and the control module 4 are electrically connected, the three-chamber intake control module 2 is connected to the engine system under test through a pipeline, the insulation monitoring module 3 is electrically connected to the engine system under test, the control module 4 is electrically connected to the engine system under test, and the control module 4 can also communicate with the engine system under test.

[0031] The air intake control module 1 includes a manual switch 101, a first pressure sensor 102, a shut-off valve 103, a proportional valve 104 and a second pressure sensor 105 which are sequentially connected to the pipeline. The main function of the air intake control module 1 is to adjust the pressure required for the air tightness test of the intake air to the engine. The function of the manual switch 101 is to control the switching of the air source. Before starting the air tightness test, the manual switch 101 needs to be opened and manually closed after the test to ensure the safety of the system. The shut-off valve 103 is a controllable solenoid valve, and its function is to cut off the air source. The proportional valve 104 is a pressure regulating device. The first pressure sensor 102 is used to monitor the pressure of the air source, and the second pressure sensor 105 is used to monitor the pressure required for the air tightness test. The control module 4 adjusts the opening of the proportional valve 104 with reference to the pressure feedback from the second pressure sensor 105.

[0032] The three-chamber air intake control module 2 includes an exhaust valve 201, a hydrogen circuit valve 202, an air circuit valve 203 and a water circuit valve 204. The exhaust valve 201, the hydrogen circuit valve 202, the air circuit valve 203 and the water circuit valve 204 are connected in parallel through pipelines, and the exhaust valve 201, the hydrogen circuit valve 202, the air circuit valve 203 and the water circuit valve 204 are interconnected. The rear section of the hydrogen circuit valve 202 is connected to a third pressure sensor 205, the rear section of the air circuit valve 203 is connected to a fourth pressure sensor 206, and the rear section of the water circuit valve 204 is connected to a fifth pressure sensor 207. An air circuit interface 208 is provided at the end of the pipeline where the hydrogen circuit valve 202, the air circuit valve 203 and the water circuit valve 204 are located, and the air circuit interface 208 is connected to the engine system under test through a pipeline. During the specific implementation, an electromagnetic throttle is used to control the intake flow of hydrogen, air and water in the engine system respectively. Since the pipeline diameters and internal cavity volumes of hydrogen, air and water in the engine system are different, if the intake flow is not controlled, the pressure difference between different cavities will be too large. Therefore, the intake flow is controlled by different openings of the throttle. The third pressure sensor 205, the fourth pressure sensor 206 and the fifth pressure sensor 207 feedback the pressure of the three chambers of the engine. The exhaust valve 201 controls the exhaust of the entire test system. After the normal test is completed, the exhaust valve 201 will slowly release air at a certain opening. If an emergency such as excessive pressure or pressure difference occurs, the exhaust valve 201 will be fully opened and the exhaust will be quickly exhausted to prevent damage to the engine system. The air circuit interface 208 is the interface between the equipment and the engine system under test, and is in the form of a quick-plug interface for easy connection.

[0033] The insulation monitoring module 3 includes an insulation monitoring mechanism 301 and a high-voltage interface 302, the insulation monitoring mechanism 301 and the high-voltage interface 302 are electrically connected, the insulation monitoring mechanism 301 is electrically connected to the control module 4, and the insulation monitoring mechanism 301 communicates with the control module 4, and the high-voltage interface 302 is electrically connected to the engine system under test. In specific implementation, the insulation monitoring module 3 adopts a small signal injection detection method, and the high-voltage input line is connected to the engine system under test through the high-voltage interface 302. When detecting insulation, first send a signal to the engine system under test through the control module 4, control the engine system under test to close the main positive and main negative relays, and connect the entire high-voltage circuit. At this time, the insulation detection module 3 can test the insulation resistance of the entire high-voltage system.

[0034] The control module 4 includes a controller 401, a switching power supply 402, a UPS (uninterruptible power supply) 403, a panel 404, a CAN tool 405, a host computer 406 and a low-voltage interface 407. The controller 401 is electrically connected to the switching power supply 402, the controller 401 is electrically connected to the low-voltage interface 407, the low-voltage interface 407 is electrically connected to the engine system under test, and the low-voltage interface 407 and the engine system under test communicate via CAN. The controller 401 is electrically connected to the intake control module 1, the controller 401 is electrically connected to the panel 404, the switching power supply 402 is electrically connected to the panel 404, the controller 401 and the CAN tool 405 can communicate with each other, the CAN tool 405 and the host computer 406 can communicate with each other, and the UPS 403 is electrically connected to the switching power supply 402 and the host computer 406 respectively. In specific implementation, the control module 4 is centered on the controller 401, and the UPS 403 is connected to the external mains power supply and provides an uninterruptible power supply for the switch power supply 402 and the host computer 406. The switch power supply 402 provides a 24V power supply for the entire device; the controller 401 controls the actions of the components on the panel 404 according to the operating status of the entire device. The tester can control the device to complete different operations through the buttons of the host computer. The host computer 406 can control the switch of the shut-off valve 103 through the instructions of the controller 401, and the controller 401 adjusts the opening of the proportional valve 104 through the PWM duty cycle. The controller 401 can send commands to control the inching of components such as the pressure regulating valve, throttle, and thermostat inside the tested engine system, and can detect the feedback values ​​of the temperature sensors, pressure sensors, and flow meters at various positions inside the tested engine system, and send the inching data and sensor data to the host computer 406. The tester can complete the offline detection of the entire engine system very conveniently.

[0035] Furthermore, the insulation monitoring mechanism 301 communicates with the control module 4 via CAN communication.

[0036] Furthermore, the controller 401 communicates with the CAN tool 405 via CAN communication; the CAN tool 405 communicates with the host computer 406 via CAN communication.

[0037] Furthermore, the insulation monitoring mechanism 301 is connected to a grounding wire 303, so that the safety of the entire device is guaranteed.

[0038] The panel 404 is provided with an emergency stop button, a device status indicator light, a fault indicator light and a fault buzzer.

[0039] The host computer 406 is provided with a self-test button, a start air tightness test button, an insulation test button and a device jog button.

[0040] The above specific embodiments may be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.

[0041] The technical features of the above embodiments may be arbitrarily combined (as long as there is no contradiction in the combination of these technical features). To make the description concise, not all possible combinations of the technical features in the above embodiments are described; these embodiments that are not explicitly written should also be considered to be within the scope of this specification.

[0042] The above is a relatively specific and detailed description of the utility model through general description and specific embodiments. It should be pointed out that, without departing from the concept of the utility model, it is obvious that several variations and improvements can be made to these specific embodiments, which all belong to the protection scope of this application. Therefore, the protection scope of the patent of this application shall be based on the attached claims.

Claims

1. An offline detection device with integrated airtightness monitoring function, characterized in that: The invention comprises an intake control module (1), a three-chamber intake control module (2), an insulation monitoring module (3) and a control module (4); the intake control module (1) and the three-chamber intake control module (2) are connected via a pipeline; the intake control module (1) and the control module (4) are electrically connected; the insulation monitoring module (3) and the control module (4) can communicate with each other; and the insulation monitoring module (3) and the control module (4) are electrically connected; the three-chamber intake control module (2) is connected to a tested engine system via a pipeline; the insulation monitoring module (3) is electrically connected to the tested engine system; the control module (4) is electrically connected to the tested engine system; and the control module (4) and the tested engine system can also communicate with each other.

2. The offline detection device with integrated airtightness monitoring function according to claim 1 is characterized in that: The air intake control module (1) comprises a manual switch (101), a first pressure sensor (102), a shutoff valve (103), a proportional valve (104) and a second pressure sensor (105) which are sequentially connected to a pipeline.

3. The offline detection device with integrated airtightness monitoring function according to claim 1 is characterized in that: The three-chamber air intake control module (2) comprises an exhaust valve (201), a hydrogen circuit valve (202), an air circuit valve (203) and a water circuit valve (204); the exhaust valve (201), the hydrogen circuit valve (202), the air circuit valve (203) and the water circuit valve (204) are connected in parallel via a pipeline, and the exhaust valve (201), the hydrogen circuit valve (202), the air circuit valve (203) and the water circuit valve (204) are interconnected; the hydrogen circuit valve ( The rear section of the hydrogen circuit valve (202) is connected to a third pressure sensor (205), the rear section of the air circuit valve (203) is connected to a fourth pressure sensor (206), the rear section of the water circuit valve (204) is connected to a fifth pressure sensor (207), and the ends of the pipelines where the hydrogen circuit valve (202), the air circuit valve (203) and the water circuit valve (204) are located are provided with a gas circuit interface (208), and the gas circuit interface (208) is connected to the engine system under test through a pipeline.

4. The offline detection device with integrated airtightness monitoring function according to claim 1, characterized in that: The insulation monitoring module (3) comprises an insulation monitoring mechanism (301) and a high-voltage interface (302), the insulation monitoring mechanism (301) and the high-voltage interface (302) are electrically connected, the insulation monitoring mechanism (301) is electrically connected to the control module (4), and the insulation monitoring mechanism (301) communicates with the control module (4), and the high-voltage interface (302) is electrically connected to the engine system under test.

5. The offline detection device with integrated airtightness monitoring function according to claim 1, characterized in that: The control module (4) comprises a controller (401), a switching power supply (402), a UPS (403), a panel (404), a CAN tool (405), a host computer (406) and a low-voltage interface (407), wherein the controller (401) is electrically connected to the switching power supply (402), the controller (401) is electrically connected to the low-voltage interface (407), the low-voltage interface (407) is electrically connected to the engine system under test, and the low-voltage interface (407) and the engine system under test are connected via CAN. The controller (401) is electrically connected to the air intake control module (1), the controller (401) is electrically connected to the panel (404), the switch power supply (402) is electrically connected to the panel (404), the controller (401) and the CAN tool (405) can communicate with each other, the CAN tool (405) and the host computer (406) can communicate with each other, and the UPS (403) is electrically connected to the switch power supply (402) and the host computer (406) respectively.

6. The offline detection device with integrated airtightness monitoring function according to claim 4, characterized in that: The insulation monitoring mechanism (301) communicates with the control module (4) via CAN communication.

7. The offline detection device with integrated airtightness monitoring function according to claim 5, characterized in that: The controller (401) communicates with the CAN tool (405) via CAN communication; the CAN tool (405) communicates with the host computer (406) via CAN communication.

8. The offline detection device with integrated airtightness monitoring function according to claim 4 is characterized in that: The insulation monitoring mechanism (301) is connected to a grounding wire (303).

9. The offline detection device with integrated airtightness monitoring function according to claim 5, characterized in that: The panel (404) is provided with an emergency stop button, a device status indicator light, a fault indicator light and a fault buzzer.

10. The offline detection device with integrated airtightness monitoring function according to claim 5, characterized in that: The host computer (406) is provided with a self-test button, a start airtightness test button, an insulation test button and a device jog button.

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